.w {
    width: 1530px;
    margin: 0 auto;
}

.bannner {
    position: relative;
    height: 800px;
}

.bannner img {
    width: 100%;
    height: 100%;
}


.bannner .context1 {
    position: absolute;
    left: 625px;
    top: 310px;
    font-size: 24px;
    color: #fff;
}

@keyframes move {
    0% {
        opacity: 0;
        visibility: hidden;
    }

    100% {
        opacity: 1;
        visibility: visible;
    }
}

.bannner .context1 p {
    opacity: 0;
    visibility: hidden;
}

.bannner .context1 p:nth-child(1) {
    /* animation: name duration timing-function delay iteration-count direction fill-mode; */
    animation: move 6s forwards;
}

.bannner .context1 p:nth-child(2) {
    /* animation: name duration timing-function delay iteration-count direction fill-mode; */
    animation: move 5s 1.5s forwards;
}

.bannner .nav {
    position: absolute;
    top: 60px;
    right: 190px;
    height: 50px;
    width: 240px;
    background-color: #fff;
}

.nav ul {
    height: 100%;
    width: 100%;
}

.nav ul li {
    display: block;
    float: left;
    height: 30px;
    width: 60px;
    text-align: center;
    margin: 10px 8px;
    color: black;
    line-height: 30px;
    border-radius: 15px;
    transition: all .3s;
}

.nav ul li:hover {
    transform: scale(1.13);
}

.nav ul li:last-child {
    margin-right: 0px;
}

.nav ul li:nth-child(2) {
    margin-left: 20px;
}


.nav-left-top {
    position: absolute;
    top: 60px;
    right: 418px;
    width: 0px;
    height: 0px;
    line-height: 0;
    font-size: 0;
    border: 20px solid transparent;
    border-left-color: #fff;
    transform-origin: left top;
    transform: rotate(-45deg);
}

.nav-left-bottom {
    position: absolute;
    top: 82px;
    right: 390px;
    width: 0px;
    height: 0px;
    line-height: 0;
    font-size: 0;
    border: 20px solid transparent;
    border-left-color: #fff;
    transform-origin: left top;
    transform: rotate(45deg);
}

.nav-right-top {
    position: absolute;
    top: 60px;
    right: 162px;
    width: 0px;
    height: 0px;
    line-height: 0;
    font-size: 0;
    border: 20px solid transparent;
    border-right-color: #fff;
    transform-origin: right top;
    transform: rotate(45deg);
}

.nav-right-bottom {
    position: absolute;
    top: 110px;
    right: 122px;
    width: 0px;
    height: 0px;
    line-height: 0;
    font-size: 0;
    border: 20px solid transparent;
    border-left-color: #fff;
    transform-origin: left top;
    transform: rotate(135deg);
}

.voice-over-first {
    position: relative;
    margin-top: 40px;
    height: 250px;
    overflow: hidden;
}

.voice-over-first h2 {
    margin-top: 70px;
    margin-left: 590px;
    color: #54888e;
    font-size: 30px;
}

.voice-over-first p {
    margin-top: 14px;
    margin-left: 690px;
}

.voice-over-first div {
    color: #aaaaaa;
    margin-top: 4px;
    margin-left: 718px;
}

.voice-over-first span {
    display: inline-block;
    width: 30px;
    height: 30px;
    font-size: 30px;
    color: rgb(129, 179, 135);
    margin-top: 29px;
}

.voice-over-first #TText {
    position: absolute;
    height: 30px;
    width: 45px;
    top: 216px;
    left: -685px;
    color: rgb(129, 179, 135);
    font-size: 20px;
    line-height: 30px;
    text-align: center;
}


#text {
    margin-top: 0px;
    height: 3600px;
}

.first-box {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 25%;
}

.first-pic {
    width: 500px;
    height: 820px;
}

.first-pic img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.first-text {
    width: 550px;
    height: 820px;
}

.twice-box {
    display: flex;
    flex-direction: row-reverse;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 25%;
}

.twice-pic {
    width: 500px;
    height: 820px;
}

.twice-pic img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.twice-text {
    width: 550px;
    height: 820px;
}

.third-box {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 25%;
}

.third-pic {
    width: 500px;
    height: 820px;
}

.third-pic img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.third-text {
    width: 550px;
    height: 820px;
}

.forth-box {
    display: flex;
    flex-direction: row-reverse;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 25%;
}

.forth-pic {
    width: 500px;
    height: 820px;
}

.forth-pic img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.forth-text {
    width: 550px;
    height: 820px;
}

.st {
    padding: 50px;
    text-align: center;
}

.st p {
    margin: 40px 0px;
    font-size: 20px;
    font-family: STKaiti;
    font-weight: 400;
}

.first-text p:nth-child(1) {
    margin-top: 100px;
}

.twice-text p {
    margin: 70px 0px;
}

.twice-text p:nth-child(1) {
    margin-top: 80px;
}


.voice-over-twice {
    position: relative;
    margin-top: 40px;
    height: 250px;
    overflow: hidden;
}

.voice-over-twice h2 {
    margin-top: 70px;
    margin-left: 590px;
    color: #54888e;
    font-size: 30px;
}

.voice-over-twice p {
    margin-top: 14px;
    margin-left: 690px;
}

.voice-over-twice div {
    color: #aaaaaa;
    margin-top: 4px;
    margin-left: 725px;
}

.voice-over-twice span {
    display: inline-block;
    width: 30px;
    height: 30px;
    font-size: 30px;
    color: rgb(129, 179, 135);
    margin-top: 29px;
}

.voice-over-twice #Aalbum {
    position: absolute;
    height: 30px;
    width: 45px;
    top: 216px;
    left: -685px;
    color: rgb(129, 179, 135);
    font-size: 20px;
    line-height: 30px;
    text-align: center;
}

.album {
    height: 1000px;
}

.album ul {
    height: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-content: center;
    /* 均匀分配空间 */
}

.album ul li {
    flex: 0 0 calc(25% - 25px);
    /* 每项占25%宽度并保留间隙 */
    height: 300px;
    line-height: 57px;
    text-align: center;
    margin-bottom: 20px;
    /* 行间距 */
    transition: all .5s;
    border: 1px solid rgb(178, 178, 178);
}

.album ul li:hover {
    transform: scale(1.05);
    box-shadow: 3px 3px rgba(0, 0, 0, .3);
}

.album ul li img {
    width: 100%;
    height: 80%;
}

.voice-over-third {
    height: 80px;
    line-height: 80px;
    text-indent: 1em;
    color: #54888e;
    font-size: 30px;
    font-weight: 600;
}

.us {
    height: 1500px;
}

.us ul {
    position: relative;
}

.us ul li img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.us ul li:nth-child(1) {
    position: absolute;
    top: 60px;
    left: 145px;
    width: 510px;
    height: 335px;
}

.us ul li:nth-child(2) {
    position: absolute;
    top: 60px;
    right: 145px;
    width: 510px;
    height: 335px;
}

.us ul li:nth-child(3) {
    position: absolute;
    top: 480px;
    left: 145px;
    width: 510px;
    height: 335px;
}

.us ul li:nth-child(4) {
    position: absolute;
    top: 480px;
    right: 145px;
    width: 510px;
    height: 335px;
}

.us ul li:nth-child(5) {
    position: absolute;
    top: 900px;
    left: 145px;
    width: 335px;
    height: 500px;
}

.us ul li:nth-child(6) {
    position: absolute;
    top: 900px;
    right: 145px;
    width: 335px;
    height: 500px;
}

.us ul li {
    transition: all .5s;
}

.us ul li:hover {
    transform: scale(1.03);
    box-shadow: 3px 3px rgba(0, 0, 0, .3);
}

.us div {
    position: absolute;
    top: 900px;
    right: 590px;
    width: 335px;
    height: 500px;
    text-align: center;
    padding: 50px;
}

.us div p {
    margin: 10px 0px;
    font-size: 20px;
    font-family: STKaiti;
    font-weight: 400;
}

.footer-line {
    width: 100%;
    height: 2px;
    margin-top: 100px;
    background-color: #54888e;
}

.footer {
    width: 100%;
}

.footer p {
    text-align: center;
    color: #54888e;
}

.writer {
    position: relative;
}

.writer p {
    position: absolute;
    right: 0;
    color: #54888e;
}

.one {
    margin-top: 0;
}